I really hate to appear to abuse the forum, but I only have a single question: Is this correct...... "Libellus Imperium Romanus"? I have no background in latin, and intend this to be the title of a book I am working on about Imperial Roman Government.

Translators translate that others may enjoy and benefit from the fruits of their labour. Let us presume that he or she is using English-language secondary and translated sources and not primary sources, Caecilius, as many writers do who don't have Latin. Even having Latin (of a sort), many academic writers would be hard-pressed to themselves translate accurately primary sources. It would be different if you want to write about new, untranslated sources. And, of course, you cannot check your sources without Latin.

Of course, Adrianus, and it was a mere question out of curiosity. But understandably it is a little different if one is titling their work in Latin itself, although I do say it sounds like popular history. As someone who conducts academic research in French history, there'd be no way you could do this based simply on English translations - up to a master's level, perhaps, but definitely not for a doctorate or anything as serious as a monograph.